well, Rees Jenkins is related to the Polly family, his mother being Ann Polly, and Katie who married David John Lloyd was the daughter of David Polly, Ann's younger brother. Rees was Katie's cousin.
marriage 4 July 1859 at Dowlais parish church
John Jenkins 21 bach miner Dowlais, father David, collier &
Ann Polly 18 spin Dowlais, father Thomas, collier
witnesses Elizabeth Polly & Mary Jones, all marked.
Marriage of Ann's father
2 Dec 1839 parish church of Merthyr Tydfil
Thomas Poly full bach collier Penwaunfawr, father Thomas, collier
Ann Morgans full spin Penwaunfawr, father David, collier
witnesses W Rowland & Thomas Llewellyn. Only W Rowland signed.