I didn’t meet “an old man a-clothed all in leather” this morning. In fact, there were not many folks around at all. Plenty of evidence of money spiders (Liniphiidae) activities. I think these are the webs of the money spider, normally un-noticed until they capture the morning mist.
In case you are wondering the title is a song by Steeleye Span:
One misty moisty morning when cloudy was the weather
I met with an old man a-clothed all in leather
He was clothed all in leather with a cap beneath his chin
Singing how do you do and how do you do and how do you do again