In 1766 in Ireland, an article of agreement was recorded between Lieut. Bigoe Armstrong of Balliwilliam in King's County and Laurence Costelloe Gent. of Clonfert in County Galway. The deed transferred the "land of Seven Churches containing 106 acres and also the Town and Lands of Clorane containing 197 acres all said lands are situate lying & being in the Barony of Garrycastle and King's County." The duration of the lease was for 16 years, beginning on 1 May 1766, at the yearly-rent of 17 shillings per acre for the lands of Seven Churches; while it was 13 shillings per acre for the lands of Clorane. The deed was witnessed by King Willington Gent. of Ballywilliam in King's County, William Jessop Gent. of the same place, and Francis Coulahan Farmer of Knockree in County Westmeath. The deed was proven by King Willington on 2 Jul 1766. Laurence signed his name as Laurence Costillo.

NOTE: This lease would've ended about 1 May 1782.

SOURCE: https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSH3-SQYK-5

On 25 Nov 1766 in Ireland, a memorial of articles of agreement were recorded between Moses Coates Gent. Tanner of Eyrecourt in County Galway and Stephen Costoly Gent. Farmer of Clonfert in County Galway, and Ann Costaly daughter of said Stephen of the third part. The articles of agreement recited a marriage proposal including a dower: if Ann were to become a childless widow, she would receive 400 pounds from Moses Coates' freehold & personal estates; if Ann were to become a widow with one child, she would receive 300 pounds and lay claim to a 1/3 of all estates. The deed was witnessed by John Sharp Farmer of Springfield Kings County, Lawrence Costilloe Farmer of Clonfert in County Galway, Josh. Costillo Farmer of Clonfert in County Galway, and Robt. Green of Greenhills. The agreement was proven on 1 Jul 1767 by Lawrence Costillo.

SOURCE: https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSJW-J9VH-T

On 18 Dec 1766 in Ireland, a memorial of an indented deed of lease was recorded between Col. John Eyre of Eyrecourt and Stephen Costello farmer of Clonfert in County Galway. The lease was for "the farm of Caltragh arable & pasture" consisting of 156 acres of land, described as lying "above the Decoy & Decoymans Holding situtate lying & being in the Barony of Longford & County of Galway." The duration of the lease was for the natural lives of the said Stephen Costello, Laurence Costello, and Joseph Costello "his third & youngest son." The yearly rent due was 5 shillings "for every acre during the first life that shall happen to decease and the sum of 5 shillings & 6 pence per every such acre during the other two lives, together with 6 pence __ pound received sallary payable moietively on every 1st day of May and 1st day of November over & above all taxes." The witnesses to the deed were Chas. Jackson, Moses Coates of Eyrecourt in County Galway, and David Leech of Clonfert in County Galway. The deed was proven on 4 Aug 1768 by Moses Coates, described as being "aged 25 years & upward."

SOURCE: https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSJW-Z3BP

On 18 Jun 1777 in Ireland, a memorial of an indented deed of lease was recorded between Christopher Dalton Esqr. of Loughan in County Westmeath and Lawrence Costello Esqr. of Clonfert in County Galway. The lease was for "part of the lands of Miltown containing 32 acres 1 rod and 15 perches & also parts of the Lands of Parristown? containing 175 acres 2 rods and 34 perches." These tracts were located in the parish and Barony of Rathconrath in County Westmeath. The duration of the lease was for 21 years with a yearly-rent of 287 pounds 15 shillings 6 pence, payable half-yearly on every 1st of May and 1st of November. The witnesses to the deed were James Campbell land surveyor of Ballincor in County Westmeath, Charles Gippson of Killmurry in County Roscommon, and John Reves Gent. of Dublin. The deed was proven on 7 Jul 1777 by Charles Gippson.

NOTE: There were three (3) Milltown located within the Barony of Rathconrath; within the 1) Churchtown civil parish, 2) Ballymore civil parish, and 3) Rathconrath civil parish.

NOTE: Parristown is likely present-day Piercetown civil parish within the Barony of Rathconrath.

SOURCE: https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSJ4-W94L-C

On 16 Dec 1777 in Ireland, a memorial of a lease was recorded between John Lord Baron Naas of Palmerstown County Kildare, one of the Commissioners of his Majesties Revenue, and Laurence Costello Gent. of Clonfert in County Galway. The lease was for 217 acres 3 rods & 16 perches of land consisting of "all that those the town and lands of Kilinmore [or Kilimore?] situate in the County of Kildare." The lease began on 29 Sep 1777 and was to last the duration of the 31 years, or the lives of the said Laurence Costello, Christr. Costelloe Farmer of Clonfert brother of the said Laurence Costelloe, and James Darcy Farmer in Seven Churches in Kings's County. The deed was witnessed by James Lord Baron Clifden, Robert Stafford Publick Notary of Dublin and Brabazon Stafford. The deed was proven on the same day by Robert Stafford.

NOTE: Kilinmore or Kilimore is presumably present-day Killeen More [Killeenmore] within Bodenstown, Kildare County, Ireland.

SOURCE: https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSH3-S3YL-Y

On 20 Jul 1819 in Ireland, a memorial of an indented deed of mortgage was recorded between Stephen Costello Gentleman of Mount Erin in King's County and William Kelly Gentleman of Loughrea in County Galway, citing an indenture of lease dated 21 Feb 1781 from Francis Enright Esquire of Banagher in King's County to Laurence Costello Farmer of Clonfert in County Galway. The property was described as being a "dwelling house wherein the said Francis Enright then lived with the Malt House and other offices thereunto belonging likewise the near Garden adjoining the yard for ever also the far garden at the yearly rent of 27 pounds 10 shillings sterling during the life of the said Nicholas Crawford and 41 years, near the town of Banagher aforesaid with the appurtenances at the yearly rent of 27 pounds 10 shillings sterling during the life of Nicholas Crawford & 41 years, Lawrence Costello paying only 24 pounds 13 shillings 4 pence half penny sterling yearly for the Dwelling House, Malt House, Office and near Garden for ever and after the expiration of 41 years after the death of the said Nicholas Crawford said Laurence Costello were to deliver up the quiet possession of the far garden and meadow thereto belonging with all improvements to be made thereon."

Another memorial of a lease dated 8 & 9 Aug 1805 was recorded for Thomas Miller Gentleman of Banagher, which was released onto Joseph Costello, and formerly held by George Whitfield, Elizabeth Chapman, Martin Burnett and Edward Flove? The duration of Joseph Costello's lease was from 1 May 1818 for the natural lives and life of Stephen Costello and Laurence Costello, two sons of the said Joseph Costello, and Mary Costello eldest daughter of the said Joseph Costello. They were to pay the yearly-rent of 16 pounds 8 shillings 3 pence paying half-yearly.

Another deed of lease and release dated 27 & 28 Sep 1805 from widow Dorothea Hussey otherwise Winter of Banagher, King's County to Joseph Costello Gentleman of Banagher. The deed described the property as "the two parks near the Town of Banagher late in possession of Dorothea Hussey containing 4 acres 3 rods Irish Plantation." The term of the lease was for the duration of the lives and life of Joseph Costello with the yearly-rent of 7 pounds an acre, payable half-yearly. "The said several and respective recited leases and the premises thereby demised became legally vested in the said Stephen Costello."

Another recited deed of lease and release dated 24 & 25 Nov 1816 from Giles Eyre and his eldest son John Eyre Esqrs. both of Eyrecourt in County Galway to Stephen Costello Gentleman of Banagher. The property was described as being "the town and lands of Caltra containing 156 acres situate in the County of Galway measured and bounded as in said lease is for the lives and life of Stephen Costello, Lawrence Costello and William Costello sons of the said Stephen Costello and the survivor of them at the yearly rent of 43 pounds payable half-yearly."

Another recited deed of lease and release dated 28 & 29 Dec 1817 from Denis Bowes Daly Esqr. of Daly's Town in County Galway to Stephen Costello Gentleman of Banagher County Galway. The property was described as being "all that and those the Rape Mill holding in his possession then being am ample as Daniel Habterry? and William Gibbons held the same containing 23 acres situate near Banagher King's County at the yearly rent of 95 pounds 13 shillings 2 pence payable half-yearly for three lives of 31 years." 

Another recited deed of lease and release dated 13 Sep 1814 recorded that Stephen Costello took possession of the houses, lands and premises for the duration of his natural life and 500 pounds sterling; also 5 shillings sterling paid to Stephen Costello by William Kelly at or before the ensealing of the deed. The property was described as containing "houses mills lands yards and gardens."

The deed was witnessed by James Burke near Loughrea and James Phillips of Castlebar in County Mayo, and signed by farmer Stepn. Costello. The deed was proven by James Burke on 17 Jan 1821.

NOTE: This is a very large deed, and as you can clearly see, many leases are recorded spanning 40 years. I believe the initial lease for Laurence in 1781 was then transferred to Joseph, after Laurence died in 1790. Every other individual in these leases are either children or grandchildren of Joseph.

SOURCE: https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSJ9-59WM-F