I started looking at both matches results.
JS matches to
me - 16 cM, 3 segments
my son - 18 cM, 1 segment
my brother - 17 cM, 2 segments
JS has a small family tree. I don’t recognize any surnames. However, interestingly, his 3xgg was born in Little Dunmow, Essex at the same time that my Mumfords were living in Great Dunmow, which according to a current map, is a five minute drive between the towns. Just a coincidence or possibly a connection? I’ll research it eventually.
MH matches
me - 12 cM, 1 segment
my mum - 12 cM, 1 segment
my brother - 12 cM, 2 segments
However, her ancestors’ birthplaces are to vague to see any connection. I most likely will not spend time trying to find a connection.
An interesting result, but not worth researching -
Em matches
me - 25 cM, 2 segments
my son - 18 cM, 1 segment
my mother - 11 cM, 1 segment
my brother - 21 cM, 2 segments
EM has 10 names in her tree; all were born in Dorset, England starting in 1830. The tree is too brief to spend time exploring.
Excluding an error in the numbers (and given the fact that the cM are so minor), I don’t remember the answer - is it possible for a child to have more cM than a parent, please?
Added: I haven’t had time to read the previously mentioned link, I will read it today.