In 1848 Jasper Rumboll Maskelyne was co-executor of his father's Will.
In 1851 Jasper R. Maskelyne, aged 50, born in Wroughton Wilts, unmarried, farmer of 250 acres employing 26 labourers, was on Littlecott Farm in Hilmarton Wilts.
In 1854 Jasper Rumboll Maskelyne of Littlecott was the sole executor of the Will of his uncle Timothy Maskelyne of Littlecott in Hilmarton.
In 1861 Jasper R. Maskelyne, aged 60, born in Wroughton Wilts, unmarried, farmer of 307 acres employing 13 men and 2 boys, was on Littlecott Farm in Hilmarton Wilts.
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Jasper Maskelyne of Littlecott died aged 60 years (burial record).
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The Will of Jasper Rumboll Maskelyne late of Littlecot in the parish of Hillmarton in the county of Wilts, dairyman, deceased, who died 3 September 1861 at Littlecot aforesaid, was proved 28 April 1862 at the Principal Registry by the oaths of Thomas Rumboll Warman of Littlecot aforesaid, dairyman, and William Bridges of Hillmarton aforesaid, farmer, the executors. Effects under £7,000. 1