On Googling Pennington more, I came across a Margaret, possibly sister to Jenny.
Lancasterwright.com came up and the following details were revealed about the father:
The Barracks, Lincoln, dau Henry Moore, Army Hospital Corps. Wife: Jane Moore, nee Evans.
Residence 1882, Lincoln, England, The Barracks, Army Hospital Corps.
Kate's post Wednesday 7th September 2022, 12:35 mentioned him. I believe it may be the same man.