Encountered: Chapter Five - by Donia, at her cottage, Chapter Nine - by Donia, in the streets of Huntsdale, Chapter Eleven - at the school.

Beira visits Donia--as always after Keenan's visit to her--and keeps moving close enough to Donia that she steps out into her yard and watches the guards:

'In the shadows she saw a score of Keenan's lackeys. Rowan-men, fox-faeries and other court soldiers - even those that looked almost mortal were still somehow strange to her after decades of their presence. They were always there, watching her, carrying word of her every move back to him. No matter that she told him innumerable times that she wanted them gone. No matter that she felt trapped by their watching and waiting.
[...]
He'd been too used to Rika's cooperation, too used to everyone kowtowing to him. So Donia had frozen a number of guards during the first decade. If they came too close to her, she let a thick rime cover them until they couldn't move. Most had recovered, but not all.
Keenan merely sent more. He didn't even complain. No matter how awful she was to him, he insisted on sending more of his guards to keep watch over her. And she kept lashing out, freezing them until eventually he told the next round of guards to stand in the safety of the furthest trees or perch in the boughs of the yew and oak. It was progress of a sort.' (pg54 and pg55)

'Across the street several of Keenan's guardsmen kept a discreet distance, winding their way around the people, leaning into the crumbling facades of the buildings in this part of the city, and somehow still managing to keep the edges of their longs coats from dragging through any of the filth on the ground.' (pg94 and pg95)

'The guards were keeping their distance, but even being near that much iron had to be painful for them. He motioned for them to pull back further.' (pg96)

'She kept her voice as low as she could in hopes that Keenan's guards wouldn't hear.
One of them was already moving closer to her.
Too late. She hid her brief smile - any success against them was a pleasure - as she disconnected.' (pg116 and pg117)

'Along with the stares from half the students at school, Keenan's faeries watched them, unabashed as the fey always were. They seemed tired, shifting in and out of the school in small groups. Although the metal-laden building must be painful for them, they stood alert and observant, keeping Keenan in their sight at all times. They treated him reverently. Why wouldn't they if Keenan is a faery king.' (pg117)

Of all of Keenan's guards that are sent to watch over Keenan and Donia in Wicked Lovely, only two are named: Evan, who leaves the Summer Court at the end of Wicked Lovely to become the head of her new guard, and Skelley, who is described as 'soft, like the Scrimshaw Sisters'. It is unknown if any other of the guards regularly watch over her: only those two are named and mentioned multiple times.