Helen Maud Holt
She was the wife of the actor Herbert Beerbohm Tree and the mother of Viola Tree , Felicity Tree and Iris Tree . 
<triplet> Herbert Beerbohm Tree <subj> Viola Tree <obj> child <subj> Felicity Tree <obj> child <subj> Iris Tree <obj> child <triplet> Viola Tree <subj> Felicity Tree <obj> sibling <subj> Iris Tree <obj> sibling <triplet> Felicity Tree <subj> Viola Tree <obj> sibling <subj> Iris Tree <obj> sibling <triplet> Iris Tree <subj> Viola Tree <obj> sibling <subj> Felicity Tree <obj> sibling