Holy Trinity Church is in the village of Seathwaite, Cumbria, England.

For 67 years the curate of that church had been Robert Walker, who was made famous by the poet William Wordsworth.

Wordsworth called him "Wonderful Walker", and made reference to him in his Duddon Sonnets and in the poem The Excursion.

Its plan consists of a nave and chancel in one range, with an organ loft and vestry to the north, and a south porch.

A stone is attached to the porch incorporating a sundial; this had formerly been the shearing stool of Walker.