Can anyone help on these problems please

I have found records of two Emily Ellen WHite both marrying a Reuben King - I thought MAYBE a coincidence of father and son but no, the Emilys have the same data e.g.

One was born in Suffolk England in 1835 marring a Reuben King on 6-10-1891 making her 56 and him 60
BUT then a child is recorded, Ruth, born to Reuben and Emily (nee White) 3-7-1892, making Emily 57 at time of birth!! Ruth died 2-4-1962 aged 70
PLUS another Ruth is recorded as a child of Reuben and Emily (nee White) King - born 1900 and dying at Wellington Hospital in 1907 aged 7

The second Emily White was born in Taita 3-2-1870 marrying a Reuben King on the same date as the other one, making her 21 and Reuben 60 and making her 20 when 1 Ruth was born or 30 for the 2nd one

One other small matter is the 1st wife of Reuben - Mary Wensley, who married Reuben 40 years prior and died May 1891, therefore Reuben married one of these Emilys 5 MONTHS LATER - all very confusing