Dr Flexman is one of c 50 authors listed at the start of Kippis 1795 as contributing sacred texts.
After these two pages there follows a long alphabetical list of texts (several hundred of them, including well-known ones). But in what I can obtain on the web of Kippis, we can`t see his pages giving the texts, nor can we tell which texts the authors wrote.
From Hymnary.org, Dr Flexman wrote: Great God to Thee my grateful tongue.
Well now we know the two names appear in 1701, I can only proffer William Drummond of Hawthornden 1585-1649. His translation of St Ambrose`s 4th century hymn appears in RCH (No 4): O Trinity, O... more
Julian's Hymnology seems to confirm that it is William Drummond that we are looking at. There is a surprisingly wide variety of hymnodists and psalmodists represented in The Divine Companion. I... more
It seems Drummond mostly wrote on non-spiritual themes, but some poems with Christian content are in his Urania collection. Maybe you could find your Playford text in this, or via the indexes of... more