Yes, I couldn't agree more. Those amazing spinster aunts who remember every niece and nephew, the names of their husbands/wives, and each of their children, as well as cousins and how they are related.

The will you mention will have been that of Joney Lace made 11 Jan.1788? I only took notes from it (pre-Brian's index) but it is worth quoting as an example. My additions are in square brackets:

Notes from the will of Joney Lace made 11 Jan.1788: [LDS film no.106400]
My sister Mrs Mary Allen [left ten pounds], to Mary's daughters:
Jane the wife of Edward Christian
Alice the wife of William Martin
Mary the wife of Mr William Christian

To my brother-in-law Thos Corlett of Ballaugh [Thos C marr. Eleanor Lace 1748]
To his son Thomas, son Philip, son William, his daur Ann the wife of John Cannell, his daur Ellinor the wife of Mr Danl Stephen, his daur Jane the wife of John Mylevorey.

To my brother-in-law David Caine [David C. marr. Bahee Lace 1748, children b. Jurby]
To Patrick his son, son David, daur Ann wife of Thos Callister, daur Mary wife of Thos Kewin.

To my sister Jane Teare als Lace. [Jane marr. John Teare Andreas 1752]
To her daur Ann, daur Jane, son Thomas, son John and to the sd John Teare's child Jane Teare.

To my sister Margery Radcliffe [marr. William R. Parish Clerk].
To her daur Mary, daur Margery, son William, son Charles, son James, son John, daur Ann Lace als Radcliffe, and to Charles son of sd Ann Lace, and to Elizabeth daur of Ann Lace when they reach the age of 21.

To Alice daur of Patrick Cain.

To the poor of KK Andreas the sum of six pounds..

The sum of five pounds towards the Building of a new School house on the land purchased from Philip Radcliffe for that purpose.

To Jane the wife of Philip Clark of Jurby.
To William Lace.
To Jane Teare Margery Radcliffe & Esther Allen all my shaped clothes...

To Mr Thomas Allen all my right and title in & unto an house & garden situated in the Town of Ramsey, as also my Right & title to two parcels of land one of them situated in KK Christ Lezayre and the other in KK Andreas...

To Mr Thos Allen's children the sum of fifty five pounds...
To his daur Ann forty pounds, his son John five pounds, son William five pounds, son Thos Allen five pounds.

Mr Thos Allen execr.

There follows pages of receipts [the sums she left were usually twenty, fifteen, ten or five pounds to each person].

Philip Clark husband of Jane [signed in own hand]
William Martin husb of Alice [signed]
Thomas Teare, John Teare, & John Teare on behalf of daur Jane Teare [signed]
William Radcliffe husb of Margery [signed]
Ann Lace als Radcliffe [signed]
John Teare senior husb of Jane Teare als Lace my mk X
Thomas Corlett senior of ballaugh, Thomas Corlett, Wm Corlett, Dan Stephen [all signed]
William Christian husb of Mary [signed]
David Caine son of David Caine, Patrick Caine, Thos Callister [signed]
Philip Corlett son of Thomas Corlett [signed]
John Mylvorrey husb of Jane [signed]
Ann Tear & Jane Tear my mkX [2]
John Cannell husb of Ann Corlett als Cannell [signed]

Sue